Login History Area (Address: 250 To 380) - Mitsubishi Electric MELSEC Q Series User Manual

3 SPECIFICATIONS

3.8.7 Login history area (Address: 250 to 380)

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(c) If an error that has already stored in the Error log area recurs, the error
code is not stored in the Error log area.
POINT
(1) The information of the error log area can be confirmed on the following
diagnostic screen.
(a) "Error history" of self-diagnostics monitor (Refer to Section 6.2.6)
(b) "Error Display" in system monitor of GX Developer (Refer to Section 9.2.2)
(2) The error log area can be cleared in either of the following methods.
(a) Execute History clear in self-diagnostics monitor (Refer to Section 6.2.6).
(b) Switch the power OFF and then ON or reset the CPU module.
The history of login to the Web server module via the Web or FTP can be confirmed.
(1) Number of login times (Address: 250 to 251)
This area stores the cumulative number of login times to the Web server module
using Web or FTP.
(2) Login history write pointer (Address: 252)
(a) This area stores the login history No. with which the latest login history has
been stored. ( )
0 : No login history. (No login history stored)
1 or more : Login history No. of the latest login history stored
The pointer value of "16" indicates that the latest login history has been
stored into the login history 16 area.
(b) If 17 or more errors occur, the login history is stored into the login history
areas, starting from the login history 1 area again.
(3) Login history 1 to 16 (Address: 253 to 380)
This area stores the history of login to the Web server module via the Web or
FTP.
The login history area is composed of 16 portions of the same data arrangement.
(a) User number
1) This area stores the user number for login.
2) The user number is the number set in the account setting.
(b) Source IP address
This area stores the IP address of the access source for login.
(c) Login type
This area stores whether Web or FTP has been used for login.
1: Web login
2: FTP login
MELSEC-Q
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